Ok, guys I need some advice. So I bought an old Manco trike, pictured below. And I want to convert it to a fat guy minibike….
So the trike has an 8hp Briggs and a 40 series clutch on it. My idea is to narrow and lengthen the rear end so I can fit the rear tire without repositioning the shaft bearing mounts. Basically do some cutting and splicing. And leave everything else well enough alone.
My biggest questions are with the motor and 40 series clutch, what gear ratio should I be looking at? The kicker, I’m 6 foot 4 inches tall and am pushing 350 lbs. Tires will be 22x11x8, and really if I hit 25 mph I would be plenty happy. I would much rather have low end than top speed. From what I’ve read more weight equals larger ratio. I should be able to source sprockets that get me 12:1 ratio but is that needed with the 40 series clutch? By the calculators I found online 12:1 will only get me about 20mph where 9:1 will get me approx. 26 mph. Is the 8hp even big enough?
Let me know what you guts think, any insight you can give me is greatly appreciated.
Canadian Kid
So the trike has an 8hp Briggs and a 40 series clutch on it. My idea is to narrow and lengthen the rear end so I can fit the rear tire without repositioning the shaft bearing mounts. Basically do some cutting and splicing. And leave everything else well enough alone.
My biggest questions are with the motor and 40 series clutch, what gear ratio should I be looking at? The kicker, I’m 6 foot 4 inches tall and am pushing 350 lbs. Tires will be 22x11x8, and really if I hit 25 mph I would be plenty happy. I would much rather have low end than top speed. From what I’ve read more weight equals larger ratio. I should be able to source sprockets that get me 12:1 ratio but is that needed with the 40 series clutch? By the calculators I found online 12:1 will only get me about 20mph where 9:1 will get me approx. 26 mph. Is the 8hp even big enough?
Let me know what you guts think, any insight you can give me is greatly appreciated.
Canadian Kid